The main RuneScape Wiki has an article on: Archaeological expert
The Old School RuneScape Wiki also has an article on Archaeological expert.

"Terry" Terrance Balando or Archaeological expert of Varrock is a key non-player character involved in the quest Digsite. He is located in the Exam Centre and players can bring items found at the digsites for him to identify. He will also exchange 3 gold nuggets for gold.

Some of the items that can be used on him include:

Dialogue

This article on a non-player character has an associated dialogue page.

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